$ git clone -n https://src.fedoraproject.org/rpms/python-jupyterlab-server.git /var/lib/mock/f45-build-31210-651/root/chroot_tmpdir/scmroot/python-jupyterlab-server
Cloning into '/var/lib/mock/f45-build-31210-651/root/chroot_tmpdir/scmroot/python-jupyterlab-server'...
$ git fetch origin d4c0ee7b3347ebdd76005fd2a07a782e51688640:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-jupyterlab-server
 * [new ref]         d4c0ee7b3347ebdd76005fd2a07a782e51688640 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d4c0ee7 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild